A train `200 m` long is moving with a velocity of `72 km h^(-1)` Find the time taken by the trainto cross the bridge `1 km` logn .

Explanation

To solve the problem of how long it takes for a train to cross a bridge, we can follow these steps:

### Step 1: Convert the speed of the train from km/h to m/s
The speed of the train is given as 72 km/h. To convert this to meters per second (m/s), we use the conversion factor:
\[ 1 \text{ km/h} = \frac{5}{18} \text{ m/s} \]
Thus,
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